But why did they pile into bonds all at once? Wouldn't you normally do the equivalent to Dollar Cost Averaging? Did they have no other choice but to park a huge chunk of money into various government bonds at exactly the wrong time?
They didn't get it all in at exactly the wrong time, but it does appear they lost something like $10-15 bill on around $80-$90 bill or so of securities. That's a lot of money given the entire shareholders equity is around $16 bill.
They are public, you can see their filings at the SEC. I'd guess some hedge fund paying attention noticed this weeks ago and just made a killing.